What is the successor of :
/interface wireless info country-info country=<country name>
command for checking the available channels and regulations?

Notes:

1. it seems to be safe to always use "number=0" ... but it may matter on some awkward chipsets?
2. be careful about capitalization of country name, it seems a capital initial character is required. For multi-word country names things get complicated ...
3. ... e.g. you have to use doubke quotes to enter all the words of country name.
4. you can only get list of country names if you type in at least one character (followed by a TAB) ... list of country names, containing that part is then shown. Lots of country names seems to contain letter "a", but probably not all